Improvement in pocket sun-dials



DWIGHT L. SMITH,` OF WYATERBURY, CONNECTICUT.

Letters Patent No. 106,735, dated Aat/11.81523, 1870.

IMPROVEMENT IN :POCKET SUN-DIALS.

The Schedule referred to in these Letters Patent and making part of thesanie HOv-v--n To all whom it may concern:

Be it known that I, DWIGHT L. Snun, of Waterbury, in the county ot'NewHaven and State ot' Connecticut, have invented a. new Improvement inCombined Compass und Sun-Dial; and I do hereby declare that thefollowing, when taken in connection with the accompanying drawing andthe letters of reference marked thereon, to be a full, clear, and ex-lact description of the same, and which said drawing constitutes part ofthis specification, and represents m- Figure 1, a side view with thecase closed;

Figure 2, a top view open;

Figure 3, an under side view ot' the dial-plate, illustrating itsconstruction; and inv Figure 4, a central section.

lhis invention relates to the construction cfa compass and sun-dialcombined, and

It consists in uniting the gnomon, dial, and needle by extendingprojections or points from the gnomon through the dial, and bent so asto clasp around and secure the dia-l, gnomon, and needle together; also,in the manner, as hereafter described, for securing the crystal into thecase.

AA is the dial.

B, the needle.

C, the guomon; the dial graduated in the usual manner, and arranged uponthe needle B, in the proper position; the needle provided with aseat, D,to rest upon a central bearing, a.

'lhe dial is usually made from thin metal or paper Yand perforated onthe central liuc, so as to permit the project-ions or eudsfl ofthegnomon to pass through. The needle is also perforated in the samerelative position, so `that the perforations designate the exactposition required for the gnomon.

The snid points, d, after passing through both the dial and needle, areturned bot-h to the right and left, so that while they support thegnomon they at the same time secure the three parts togetherso that theymay be set upon the pivot (t, as seen in tig. 4. A

rIhe pivot-a is set in the center 4ot the case C, and within this anauxiliary case or lining, E, is set, in to the upper edge of which theglass crystal F is arranged, and this is secured to the lining E, `byturning over the upper edge of the lining, then indenting below thecrystal, as at f.

v .The lining extends Iabove the case Cso as to receive the cover L, asseen in figs. 1 and 4.

I claim as my inventionl. The combination of the. dial A, needle B, andgnomon C, constructed and united together by the extension D ot thegnomon, through both the dial and needle, in the manner described.

2. 'lhe combination of the gnomon C, cover L, lining E, and crystal F,as described, and when the dial is secured in the lining, in the mannerset forth.

DWIGHT L. SMITH.

Witnesses:

GEORGE H. CoWELL, JNO. DISENHAM.

